Title
Box4Rec: Box Embedding for Sequential Recommendation
Abstract
Sequential recommendation aims to predict a user's next behavior in near future by using the user's most recent behaviors. Most of the existing methods always embed a user or an item as a point in a vector space, and then model the user's recent behaviors as a sequence with a strict order to generate recommendations. However, both the point representation and strict order rule limit the capacity of sequential recommendation models as the diversity and uncertainty of a user's interests. In this paper, by relaxing the condition that a sequence must follow a strict order, we introduce the box embedding into the sequential recommendation and present a novel model called Box4Rec. Box4Rec embeds a user and the user's historical items as boxes instead of points to model the user's general preference and short-term preference, and then integrates the conjunction and disjunction operations on items to generate flexible recommendation strategies. Experiments on five real-world datasets show the proposed Box4Rec model outperforms the state-of-the-art methods consistently.
Year
DOI
Venue
2021
10.1007/978-3-030-75765-6_43
ADVANCES IN KNOWLEDGE DISCOVERY AND DATA MINING, PAKDD 2021, PT II
Keywords
DocType
Volume
Flexible order, Box embedding, Sequential recommendation
Conference
12713
ISSN
Citations 
PageRank 
0302-9743
0
0.34
References 
Authors
0
3
Name
Order
Citations
PageRank
Kai Deng100.34
Jiajin Huang26915.70
Jin Qin301.35